Identifiers that consist of two or more attributes are called………..
a) multi-valued attribute
b) composite attribute
c) composite identifier
d) identifiers
Which refers to connecting entities of different types when identifiers are different?
a) HAS-A relationship
b) IS-A relationship
c) binary relationship
d) none of these
Which of the following relationships that is subtypes, when identifiers of entities are same?
a) HAS-A relationship
b) IS-A relationship
c) binary relationship
d) none of these
Relationship among entities of a single class is called……
a) HAS-A relationship
b) IS-A relationship
c) binary relationship
d) none of these
Which is not included in the definition of an entity?
a) person
b) object
c) concept
d) action
Which is not an example of strong entity?
a) student
b) course
c) department
d) student-id
